What two descriptions best define DWDM？ （）

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• Which two statements best describe enhanced wireless security encryption？（）

  A . TKIP protects RC4 encryption keys B . CKIP and TKIP protect AES encryption keys C . TKIP encryption is more processor intensive than AES encryption is D . WPA requires TKIP encryption， whereas WPA2 supports AES encryption E . WPA requires AES encryption， whereas WPA2 supports TKIP encryptio

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• Which two statements best describe the wireless security standard that is defined by WPA (Choose two.)（）。

  A . It specifies use of a static encryption key that must be changed frequently to enhance security B . It requires use of an open authentication method C . It specifies the use of dynamic encryption keys that change each time a client establishes a connection D . It requires that all access points and wireless devices use the same encryption key E . It includes authentication by PSK

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• Which two statements best describe EtherChannel？（）

  A . EtherChannel technology helps aggregate traffic grouping multiple，full-duplex point-to-point linkstogether B . EtherChannel technology is based on the 802.1 IEEE stand C . EtherChannel can aggregate up to 800 Mbps，8 Gbps，or Gbps of aggregate bandwidth for a Fast EtherChannel，Gigabit EtherChannel，or 10 Gigabit EtherChannel connection respectively D . EtherChannel is defined for Rapid Spanning Tree for faster convergence

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• Which of the following descriptions best identifies the operating principal of a flash-type evaporator?（）

  A . Sea water is heated to boiling temperature while under a vacuum B . Sea water is passed over heated plates in a thin film C . Heated sea water is injected into a vacuum chamber D . Sea water is forced through a heated eductor

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• Which two statements best describe CBWFQ？（）

  A . The CBWFQ scheduler provides a guaranteed minimum amount of bandwidth to each class. B . CBWFQ services each class queue using a strict priority scheduler. C . The class-default queue only supports WFQ. D . Inside a class queue， processing is always FIFO， except for the class-default queue.

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• In AIX 5L and later， the operating system supports the /proc filesystem. What would be the best description of the /proc filesystem？（）

  A .  It is a pseudo filesystem that maps processes and kernel data structures to corresponding files. B .  It is a JFS mounted filesystem that provides an exact representation of what is happening to a proces at a single and discrete point of time. C .  It is a JFS mounted filesystem that maps processes and read-only files related to these processes. D .  It is a pseudo filesystem that contains data that represents the state of the parent processes （but not their threads） in a system.

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• Hot Standby Router Protocol (HSRP) is able to provide network redundancy for IP networks. Concerning HSRP load sharing, which two descriptions make sense?（）

  A . It is achieved by using more than one HSRP group. B . It is done in regards to either round robin or weight basis. C . It is used to offload the active router in a certain HSRP group. D . The return traffic is influenced by HSRP load sharing configuration. E . Single group HSRP is used to achieve more efficient link utilization.

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• ABC Corp. has set up the Asset Category key flexfield. It has also set up a descriptive flexfield tostore vehicle information associated with the asset category "Vehicle." Identify two correctstatements.（） (Choose two.)

  A . The setting up of the descriptive flexfield is mandatory. B . The Asset Category flexfield is owned by the Oracle Assets module. C . The descriptive flexfield is associated with tables in the Oracle Assets module. D . Only the Asset Category flexfield is associated with tables in the Oracle Assets module.

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• As a Cisco Network Engineer, you have to master the knowledge of the Cisco validated Design program. Which two of the following descriptions correctly identify its features? （）(Choose two.)

  A . It strives to protect access to design documentation. B . It facilitates customer deployments that are more predictable. C . It facilitates customer deployments that are less reliable. D . It incorporates products and technologies into a broad portfolio.

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• Which two statements best describe Cisco IOS IP SLA？（）

  A . only implemented between Cisco source and destination-capable devices B . statistics provided by syslog， CLI， and SNMP C . measures delay， jitter， packet loss， and voice quality D . only monitors VoIP traffic flows E . provides active monitoring F . provides passive monitoring

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• Which two statements best describe the Cisco Unified Wireless Network？（）

  A .  The Cisco Unified Wireless Network provides the framework to segregate wired and wirelessnetworks to deliver the best security for companies that are deploying WLANs. B .  The Cisco Unified wireless Network provides the framework to integrate and extend wired andwireless networks to deliver the lowest-possible total cost or ownership for companies that aredeploying WLANs C .  The Cisco Unified Wireless Network extends "wireless awareness" into important elements ofthe network infrastructure， providing the same level of security for WLANs that organizations havecome to expect from their VPNs. D .  The Cisco unified Wireless Network extends "wireless awareness" into important elements ofthe network infrastructure， providing the same level of security scalability， reliability ease ofdeployment and management for WLANs that organizations have come to expect from their wiredLANs.

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• What is the best description of serialization delay？ （）

  A . the time it takes for a Layer 3 switch or a router to switch a packet from an inbound interface to the queue of the outbound interface B . the time it takes for a propagate from source to destination C . the time it takes to place a frame on the physical medium for transport D . the time a packet resides in the outbound queue of a router

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• Dense Wavelength Division Multiplexing (DWDM) is an important innovation in optical networks.Which two descriptions best define DWDM?（）

  A . optical technology for transmitting up to 32 channels over multiple fiber strands B . optical technology for transmitting up to 16 channels over multiple fiber strands C . a WDM system that is compatible with EDFA technology D . a technology for transmitting more closely packed optical signals using more sophisticated transceiver designs than CWDM .

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• Which two range descriptions correctly describe IP addressing to use when enabling multicast support using the Cisco Unified Wireless Solution?（）

  A . globally scoped address range B . 239.0.0.X or 239.128.0.X address range C . administratively scoped address range that does not overlap with a link-local MAC address D . any Class D address range E . site-local scoped address range

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• Which two of these statements best describe fast secure roaming？ （Choose two.）（）  

  A .  available only in autonomous APs B .  available in autonomous and lightweight APs C .  a feature of WDS in autonomous APs D .  a feature of WDS in lightweight APs E .  requires at least one AP and one Wireless LAN Services Module

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• Please choose the right description about the language of two.

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• The article opens and closes with descriptions of two news reports ， each one major point (   ) the other ．

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• What are the two best-known paintings by Leonardo da Vinci?

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• What are the three ways to create powerful descriptive language?

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• Which of the following statements provides the best description of the marketing concept of positioning?

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• What function does the description of the well play in Norwegian Forest?

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• What are two key factors of force description？ [Clink on 2 answers. ]

  A．Magnitude. B．Weight. C．Direction. D．Power. 此题为多项选择题。

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• What one is a correct description of the western European feudalism in the Early Middle Ages？()

  A.Feudalism was a product of the Carolingian world and it operated on two levels. B.A feudal king’s actual power depended on the number of his vassals. C.A vassal holding a fief must not divide it into smaller fiefs. D.Financial service was the main reason for the feudal system to exist.

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• Examine the description of the MARKS table:SUBJ1 and SUBJ2 indicate the marks obtained by a student in two subjects.Examine this SELECT statement based on the MARKS table:What is the result of the SELECT statement？（）

  <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/1179420481e271350f195c64f9e527b9.jpg' /> <img src='https://img2.soutiyun.com/ask/uploadfile/2019-03-27/a88968eec9764c2a8638e3aee2b1e23d.jpg' /> A. The statement executes successfully and returns the student ID and sum of all marks for each student who obtained more than the average mark in each subject. B. The statement returns an error at the SELECT clause. C. The statement returns an error at the WHERE clause. D. The statement returns an error at the ORDER BY clause.

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